Input voltage: 4.5-8VOutput voltage: continuous adjustable 4.3-27V (Counter clockwise to boost voltage)Charging voltage: 4.2VCharging current: up to 1ADischarge current: the maximum 2AOutput reference maximum current: 5V 1.4A, 9V 0.8A, 12V 0.6AQuiescent current: about 0.5 mAOvershoot protection: YesOver discharge protection: None (also can be said yes, because 2V cut-off boost but does not block the output, output has 2V)Deadline boost:: 2V, depending on whether added the additional protection board